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From: warwick@cs.uq.oz.au (Warwick Allison)
Newsgroups: comp.sys.atari.st.tech
Subject: Re: Vsync, sprites, Aline
Keywords: aline,sprites,vsync
Message-ID: <1587@uqcspe.cs.uq.oz.au>
Date: 24 May 91 02:02:54 GMT
References: <1991May23.120342.3876@newcastle.ac.uk>
Sender: news@cs.uq.oz.au
Reply-To: warwick@cs.uq.oz.au
Lines: 22

>When the sprite moved around the screen, there was a region in
>which the sprite disappeared as it moved through it, (it got worse when I
>removed the wait for the Vsync).

>mono Monitor

The trouble is, you are drawing of the screen as it is being displayed.

Possible solutions:
	1. Write faster wipe/draw procedures
	2. Use double buffering
	3. Write a wipe/draw that interlaces wipes with redraws

Also, try move the Vsync() around.  Try Vsync()ing after you erase, but
before you redraw.

Warwick.
--
  _-_|\       warwick@cs.uq.oz.au
 /     *  <-- Computer Science Department,
 \_.-._/      University of Queensland,
      v       Brisbane, AUSTRALIA.